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arXiv 2109.01871gr-qchep-th
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广义相对论框架下的标量引力与双复制

Scalar Gravity and the Double Copy in the Framework of General Relativity

Emanuelis Lazauskas

摘要:

经典的双拷贝关系建立了精确引力解与双伴随理论和规范理论中的对应解之间的对应关系。在这项工作中,我们调查了一个特殊的情况下产生的标量引力方程的精确解的双拷贝关系,静态时空几何的科马尔密度分布。我们使用标量限制的静态度量分析来隔离第零个副本的线性方程所支配的自由度。相应的度规解被解释为描述重力没有自相互作用,基于科马尔密度分布。这些度量的单一副本揭示了标量引力源和静电源之间的直接对应关系。此外,这种对应甚至在粒子的水平上也存在,它们的运动由相对于背景空间的相同的非相对论表达式控制。这些和其他结果使我们得出结论,标量引力是编码在广义相对论结构中的双拷贝关系的表现。

英文摘要:

The classical double copy relations establish correspondence between exact gravity solutions and their counterparts in biadjoint and gauge theories. In this work, we investigate a peculiar case of double copy relations arising in exact solutions of the scalar gravity equation, relating static spacetime geometry to the Komar density distribution. We use a scalar-restricted static metric ansatz to isolate the degree of freedom governed by the linear equation for the zeroth copy. The corresponding metric solutions are interpreted as describing gravity without self-interaction, based on the Komar density distribution. The single copy of these metrics reveals direct correspondence between the sources of scalar gravity and electrostatics. Furthermore, this correspondence persists even at the level of particles, their motion being governed by the same non-relativistic expressions with respect to the background space. These and other results lead us to conclude that scalar gravity is the manifestation of double copy relations encoded in the structure of general relativity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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